Best product to restore gloss piano black finish on speakers?

I was gifted five older NHT speakers that have a gloss piano black finish. I’m fairly sure that this is plastic, not a lacquer or paint. There are some minor scuffs here and there and I’d like to try to restore the finish to be more uniform.

Does anyone have any suggestions for a product to use on these? Being plastic, I don’t think that a car polishing compound would be a good idea. And I’d rather not have to buy and try several different products. I can test the product on the bottoms of the speakers where “errors” won’t be very noticeable. I also have a random orbital buffer I can use, if it would be helpful.

Thanks in advance!

I’ll guess there is indeed a coating of some kind. Plastics aren’t really be molded with a piano-glossy finish.

May be. If it is lacquer, they did a really nice job.

I’d turn some screws to get a look inside. You’re right to be cautious, though. Delicate surface.

It’s probably easier to remove a speaker and take a look at the edges. The enclosures have rounded edges, so I just sort of assumed it was molded. I guess it could have been shaped and then lacquered (or some other high gloss finish). They were not expensive speakers when they were new.

High gloss vinyl laminate, if they are something like the more recent versions of the NHT SuperOne or SuperZero (I used to have a couple). Other models are MDF, with many layers of paint covered by a couple of clear coat layers.

I just cleaned mine with a microfiber cloth once in a great while, I’m afraid I have no advice for polishing out scratches in plastics.

Thank you. Seems reasonable, as they are a bit too heavy to be all plastic. They are SP-1s, SP-2s, and an SC-1. Can’t say I’m impressed with them at this point, but they look pretty (where unscuffed).

Pianos are most definitely painted many coats of lacquer.But one modern method might be to use “car wrap”.

just one of those “scratch out” pastes for making polycarb. headlights shiny again … at the end of the day, its just some fine abrasives in a liquid suspended.

just don’t start rubbing like crazy in a single spot or you might wear through the finish if it is really thin.

don’t go crazy with specifics - prob. the old toothpaste would do the job, as it often did in the 80ies on scratched CDs

The general rule of thumb for scratches in cars is: If you can catch your fingernail on it, it’s too deep to polish out. You’ll need to fill it and paint it.

If it’s just “marring” or light damage, a car polish or plastic polish and some polishing pads will do the trick. Sometimes wet sanding first. It sounds easy, and it’s not too rough, but I’d not want to be practicing on something I really didn’t want to screw up.

Agreed. These really are just minor scuffs, not scratches, dings, or dents.

I actually have some polishes for plastic that I use with my CD/DVD refinisher. They would probably work just fine for the speakers as well.

There are non-abrasive type polishes marketed for use on guitars, pianos, and other lacquer finishes:

Yes. That’s exactly the sort of product I was thinking of. Come to think of it I have a couple guitars that might benefit.